C2012/S1 ISON 彗星最後發生?

[peter]

UPDATE


ejehin
Today at 5:24 AM
View Source
Dear all,

We had a hard time this morning to observe ISON, which is lower and closer to the Sun, but it was so bright we are saturating the broad band filters in 10s and plenty of flux in 20s with the narrow band filters.
To our suprise the change has been huge in the last 24 hours ! We are reaching 1E29 mol/s in OH, an increase close a factor 8 of the amount of gas released in space, since 24 hours !
The AfRho has also increased by the same factor (it is now 2400cm), so dust is finally released too, even if the level stays quite low compare to other comets.
Two jets are now also visible in OH band (coming from water dissociation) and also faint ones in the dust continuum at the same position as the CN and C2 jets previously reported.
There is no indication yet of disruption, the inner coma is very sharp (4 arcsec) and round in the dust continuum windows and there is no other special features in the coma.
This is the early phase of the outburst as the dust is still close to the nucleus and we should still expect a large increase of the magnitude and the coma diameter if more dust is released in the coming days.
The comet will become rapidly visible naked eye if the outburst last a few more days !

Best regards,
Emmanuel

=> major outburst ongoing !
會不會今晚天氣不好
睡一覺明天亮度變更亮.. 最近 24hr 好像由 7.x -> 5.8 等變好快 .

不知道有沒有人已經上山?? 

不過目前噴發到底  是否和某些人說彗核開始 分裂??  還是??  總之ISON   是好怪的彗星  亮度一直猜不透..

[peter]

http://comet.observations.free.fr/graph/plot_mag.php?Code=CK12S010&Username=&CodeObs=&y1=1908&m1=01&y2=2013&m2=11

1天亮一等

目前  http://www.astronomy.com.cn/bbs/thread-281887-1-1.html
最新消息，北京时间11月14日，20时30分，ISON目视星等达到5.1等（看来他们是做了消光修正的）

[peter]

http://www.hkastroforum.net/viewtopic.php?p=272970#272970

11/15  市區用雙筒都睇到 135mm鏡已經出到彗尾

[汀雪見晴]

http://www.hkastroforum.net/viewtopic.php?p=272970#272970

11/15  市區用雙筒都睇到 135mm鏡已經出到彗尾

今天清晨我在屏東用雙筒鏡還是看不到

[Aray]

http://www.hkastroforum.net/viewtopic.php?p=272970#272970

11/15  市區用雙筒都睇到 135mm鏡已經出到彗尾

今天清晨我在屏東用雙筒鏡還是看不到

我看到滿天噴發的雲氣

[大瘋起嘻]

http://www.hkastroforum.net/viewtopic.php?p=272970#272970

11/15  市區用雙筒都睇到 135mm鏡已經出到彗尾

今天清晨我在屏東用雙筒鏡還是看不到

我看到滿天噴發的雲氣

見晴你會不會看錯位置了

以這樣的亮度，除非多雲

不然不可能看不見

[汀雪見晴]

當然低空水氣不少
我是依照你說的
從角宿一往上找
低空肉眼角宿一勉強可見

[peter]

現在亮度是北京說
但實際多亮??

還沒得到更正確資訊

UPDATE   

from comet-ml
http://tech.groups.yahoo.com/group/comets-ml/message/22344


===============

Re: [comets-ml] Comet ISON (C/2012 S1) From Pasadena CA    
Posted By:    

    lams_astronomia
        Send Email

   Fri Nov 15, 2013 9:13 am  |
   

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Hi
Request permission to publish your observation.
 
C/2012 S1 (ISON)
2013 Nov. 14.552 UT: m1=5.8, Dia.=1.25', DC=7; 7cm R (20x); Anthony Cook (Griffith Observatory, Pasadena, CA, USA)
 
We invite you to send us your reports of visual observations of comets, to publishing in Morris Format (or ICQ) on our website of Cometary Section of LIADA.
Forward in mailing: cometas.liada@...
 
Best regards
Luis - http://wp.me/PS5tw-bt
________________________________________________
Luis Alberto Mansilla / COMETS WATCHERS
Coordinator of LIADA Cometary Section.
* The Iberoamerican Astronomical League *
"54 Years ... Semper Observandum"
Web: http://wp.me/PS5tw-bt
Reports: cometas.liada@...
________________________________________________
 
From: griffithobserver@...
Sent: Thursday, November 14, 2013 4:49 PM
To: comets-ml@yahoogroups.com
Subject: [comets-ml] Comet ISON (C/2012 S1) From Pasadena CA
 


I observed comet ISON from Pasadena, CA this morning, 16 minutes after the start of astronomical twilight, sun elevation -14.6Ëš. Scattered cirrus was present as was suburban light pollution. I used a 70mm refractor at 20X, timed the drift of the coma to measure the diameter,  and used the Beyer method of magnitude estimation with TK reference stars
:
2013 Nov. 14.552 m1=5.8, Coma dia.=1.25' DC=7
 
The coma was circular and well defined, of a deep blue-green color and the central condensation was bright and nearly starlike. It resembled a circular planetary nebula around a central star as seen through a giant telescope.
 
The tail was not seen.
 
Yesterday (11-13-2013), ISON appeared ghostly in the same equipment. This morning, it appeared the same size, but bright and easy to see!
 
Anthony Cook
Astronomical Observer
Griffith Observatory
 
 

[peter]

http://rastreadoresdecometas.wordpress.com/

[peter]

新聞都登

應該確定 亮度變亮了

不過 台灣現在那邊天氣夠好??

[peter]

吉田誠一網頁update 
目前說m5.0..繼續爬昇

但天氣不好阿

[小慶]

由於不知ISON的亮度提升是否追得上角度逐漸降低的晨光影響，小弟也正在考慮今晚半夜就上山觀星，不過若天氣不好就沒輒了~

以清境翠峰到小風口為止，大家是否有觀星地點建議?

[cuteip]

大家都拍到翻掉了

快吧!! 再猶豫就沒了...

[小慶]

凌晨在翠峰一次看三顆彗星了，愛嬌姨其實是大綿花狀，ison就真的光點較集中而且就是藍綠色也略可看到彗尾，真是精彩～根據經驗感覺，應該進入五等星內了（4.9～4.6），不過沒多久天文曙光就會開始了～但是下周SP還應可看的清楚，就等天氣了

[cuteip]

平地彗尾版